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Give your answers as decimal parts of Q, as necessary. A metal sphere A has charge 0.88Q. Two other spheres, B and C, are identical to A except they have zero net charge. A touches B, then the two spheres are separated. B touches C, which is grounded, then those spheres are separated. Finally, C, which is no longer connected to ground, touches A and those two spheres are separated. How much charge is on each sphere?
An electron moves from point A where the potential is Va=+20.0kV to point B where the potential is Vb=- 40.0 kV. what was the change of the system's electric potential
A 73.7-kg person puts on a life jacket, jumps into the water, andfloats. What is the density of the life jacket
when 105 mL of water at 22 C is mixed with 68mL of water at 95 C, what is the final temperature? suppose no heat is lost to the surroundings and density of water is 1 g/mL.
A bowling ball (mass = 7.2 kg, radius = 0.10 m) and a billiard ball (mass = 0.42 kg, radius = 0.028 m) may each be treated asuniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?
In the park, several children with a total mass of 240 kg are riding a merry-go-round with a rotational inertia of 1500 Kg*ms2 and a radius of 2,2m. what is the rotational velocity after the children move tot he center, igoring frictional torque
A rifle with a mass of 1.76 kg fires a bullet with a mass of 5 g (0.005 kg). The bullet moves with a muzzle velocity of 401 m/s after the rifle is fired. what is the recoil velocity of the rifle
An Atwood machine consists of two masses that are connected bya taut string that passes over a perfect pulley. Initially the 8pound mass is suspended 3.5 ft above the floor and the 4 pound massis resting on the floor. After the large mass is released..
An athlete needs to lose weight and decides to do it by "pumping iron." If the weight is lifted once every 2.00 s, how long does the task take
a very long wire generates a magnetic field of .0050 x 10-4 t at a distance of 3.0mm. what is the magnitude of the
Establish an average acceleration
Hold a pocket mirror at almost arm's length from your face and note the amount of your face you can see. To see more of your face, must you hold the mirror closer or farther, or would you have to have a larger mirror?
Two bicycle tires are set rolling with the same initial speed of 3.00 meter per second along a long, straight road, and the distance each travels before its speed is reduced by half is measured. Obtain the coefficient of rolling friction for the ti..
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